Sole-rounding machine.



G. W. CARTER.

SOLE ROUNDING MACHINE. APPLICATION FILED JULY 31,1911. RENEWED 00127, 1012.

2 SHEETS-SHEBT l.

a I 'w/"b te'ssesz Patented May 13,1913.

t G. w. CARTER.

SOLE ROUNDING MACHINE. APPLIUATION FILED JULY 31, 1011. RENEWED 001'. 7, 1912.

1,061,356, Patented May 13, 1913.

2 SHEETS-SHEET 2.

@MW (0 I wowafismz N D TATE PATENT onnion.

GEORGE W. CARTER, or nonwav, MAINE.

S OLE-ROUN'DING MACHINE.

Specification of Letters Patent.

Patented May 13, 1913.

, J Application filed July 31, 1911, Serial No. 641,395. Renewed October 7, 1912. Serial No. 724,438.

To all whom it may concern:

. Be it known that I, Gnonen W CARTER, a citizen of the United States,. residing at Norway,.county of Oxford, State of Maine, have invented an Improvement in Sole- Rounding Machines, of which the following description, in connection with the aceom- "panying. drawing, is ,a speclfication, like characters on the drawing representing like parts. i

rounding the soles of boots and shoes, and is designed to provide a device by means of which allstyles of shoes may be speedily and accurately rounded by acontinuous process to leave the edge in a smooth and even condition.

An essential fe'ature of the invention re sides in the rotary cutter-which presents a knife, and preferably a plurality. of such Qhnives, projecting radially from the .axisof rotation the effective portion 01' cutting edge of each knife moving in a conical path having its axis coincident with the axis of rotation. The angle of this conical path is such as to enable the knives, when the sole is supported at right angles to, and exte riorly of, the said conical path at one point, to sever the margin from the sole'throughout the entire periphery thereof, and is consequently'governed by the degree of curva trimmed at right anglesto the bottom or surface of the sole.

To secure this result a circular and preferably a rotary rest is provided. In order to present a machine of compact design it will befound preferable to form this rest with "its supporting "portion on the surface of'a cone having its axis coincident with the axis of rotation ofthe rest, and the angle of the cone will prefer This invention relates to a machine for ably be an angle of 45 degrees when a similar angle is employed in the cutter.

The invention also rovides means for adto control the amount of margin out from the sole.

fully appear from the aCcOmpanying description and drawings, and will be particularly pointed out in the claims.

The drawings illustrate a preferred form of machine embodying the invention, but it is obvious that the invention may reside in other "forms ofstructure, and the details :frorn-the invention. y

In the drawings Figure 1' is a side elevation of 'the'mach'ine with the rotary rest shown invertical cross section. Fig. 2 is cut. Fig. 3 is a front end elevation of the machine. Fig. 4 is a plan view of the rest ;theret-o during the operation of rounding. E The machine illustrated comprises a suit- {able supporting frame With the rotary cutter and the rotary rest shown as supported on shafts extending from the cutter and the rest relatively toward the base of the conical paths traversed by their effective portions, and with'each of the said conical paths 1 having an angle of-45 degrees and arranged :at right angles to each other, but it is obvious that the invention is not limited to this arrangement, which is simply shown as the preferred form and presenting the most compact design. The machine illustrated also showsthe restas positively rotated, although this, while preferred, is not essential, andjtalso' shows a system of gearingby means of"which the cutter and rest are driven ata desired relative speed, but it is obvious that other means may be employed for securing the-desired rotation of these elements, the particular means employed therefor forming-no part of the present invention.

In the form illustrated the frame of the machine is shown as comprising a base 1 jus'ting the relationo the cutter and the rest @with the'sole of theshoe located in relation,

The nature of the invention will more may be varied materially without departing a detail view showing the rest for a closer 4o knives.

and extending upward therefrom the up rights 2 and 3 connected at "the top by the cross bar ,4 extending at its forward end 5 to present an overhanging arm. There is 5 also extended from the upright 2 beneath the overhanging arm '5 a bracket 6. The cutter shaft 7 is'mounted in alined bearings 8 and 9 formed respectively on the overhanging arm 5 and the upright 3. The cutter s se- 10 cured to the forward projecting end of the cutter shaft 7 and comprises preferably a plurality of knives, twobeing shown at 10. These knives project radially from the shaft 7 and are shown as formed integral with a hub 11. secured to the end of the shaft by a screw 13 and washer 14; The effective portion 15 of these knives on which the cutting edge is formed lies in the surface, of an imaginarycone having its axis coincident 0 with the axis of the shaft-"(, and the angle of this cone, that is the angle between an element thereof and its axis, is shown/as-if) degrees. It will thus be seen that when the sole of a shoe is presented to the cutting knives at right angles to the surface of the conical path in which the effective portions of the knives travel, or at right angles to the cutting edges of the knives at a given point, the sole may be guided past the knives while rotating and enable the knives to sever the margin of the sole by a cut at right angles to the bottom or surface of the sole throughout the entire periphery of the sole including. the reentrant portions of the shank.

In order to support the sole in proper position with respect tot-he path of the knives the supporting portion of the rest must lie at right angles to the ath of the In the form illustratedt-he rest 16 is shown as an inverted cup-shaped disk ,removably secured to a hub 50 which hub.

is j ournaled on a stud 17 secured vertically in the bracket 6. The effective portion of the rest, that is the. annular marginal portion 18 upon whichthe sole or the margin.

of the sole rests, is formed as a conical surface, the axis of which is coincident with the axis: of rotation of the rest, and the angle' of which is Preferably, 45 degrees, or

the same as that of the angle of .the rotary cutter, The central portion of the rest is rounded or curved preventing interference ,9 with the overhanging arm 5. The extreme 'outer'edge of the rest is finished to, an acute angle 19 and fits in against the line of juncture of the upper with the welt, and serves to guide the shoe.

An annular recess 51 is formed in the .60 marginal portion of the rest and the outer wall of this recess is at. right angles to the surface of the portion- 18 and the knives when in operation enter this recess and cooperate with the. vertical Wall thereof to cut the sole. The rest 16 is removably secured tothe hub 50 so that various sizes of rests may be used to secure different widths of margins being removed. A rest for a closer cut, thatis the removal of a wider margin", is shown in Fig. 2. Any suitable means may be employed for interchangeably mounting the rests. Herein dowel pins 52 are empfoyedtand set screws 53 passing through av flange on the rest fitting over the hub. The hub is shown as provided with a bevel gear'2O driven from a second bevel gear 21 located at right angles thereto. and mounted'upona shaft 22 journaled in alined bearings 23 and 24 in the uprights 2 and 3 respectively.

tation of "the knives as indicated by the arrows in Fig. eh Each cutter as it revolves into contact with the sole must make but a small cut in order that the surface of the sole shall be smooth'and even, and hence the cutter must rotate at a high rate of speed as compared with the rotation of the V J so It is preferred that the rest shall'rotate 1n 'the direction in which the shoe is being fed-and ,in the opposite direction to the rorest, the exact amount of relative rotation b'eing governed by the amount whichit is desired each cutter shall cu't. Int-he construction illustrated the cutter shaft is sh'own as revolvingl lt times to each revolution of the rest, and this is secured by intermediate gearing between the shaft 22 for driving the rest and the shaft 7 for driving the cutters. A stud shaft 25 is mounted in the base of the upright 3 and carries thereon a pulley 26 driven from any suitable source of power; A pinion 27 on the stud shaft 25 drives directly a gear 28 on A gear 29 on therest the rest shaft 22. shaft drives a pinion 30 on a stud shaft 31 supported in a bracket projecting from the upright 3, and this shaftin turn carries a gear 32 which drives a pinion 33on a secand stud shaft'34 supported in a'fbracket 35 projecting from the crossbar. 4; A' gear 36 carried by the stud shaft 34 drives dill rectly a pinion 37 fast on the cutter shaft 7 I The cutter shaft 7 is longitudinally ad-- justable so'that whatever rest may be 'emv ployed the knives may be brought into 00'- operationz. w th the wall of the recess '51 therein. 'This adjust-ment glay be secured in any, desired manner. In the construction shown a grooved collar 55is secured to the shaft and a lever 56: is fulcrumed at 57 on margin, a rotatory cutter knife and means for rotating it in a conicalpath at right angles to, and having its apex on the same side as, the margin sustaining surface of said rest.

2. A sole rounding machine comprising a rotary circular rest for sustaining and. guiding the sole margin, said rest being provided near its periphery with an annular recess having its outer wall perpendicular to the, surface of the rest, a rotary cutter moving dial knives, the cutting edges of which lie in a cone having the same axis as the axis of rotatil 1 of the cutter, and a rest for sust aining and guiding the, sole margin havter shaft, the cutting edges of ,said knives ing its supporting surface at rightangles to 'the path of said knives and below the conical apex thereof and on the same side of the rest as the conical apex of the knives path. 3" i 5. A sole rounding machine comprising a rotarycutter comprising a plurality of radial knives, the cutting edgesof which lie in a cone having the same axis as the axis of rotation of the cutter, a rotary rest for sustaming and uiding the sole margin hav ing its perip eral surface lying in a cone hav ng the same arms as the axis of rotation of the rest,the conical surface of' the rest at its point of cooperatioh with the knives being located thereof. a

6. A sole roundin machine comprisinga cutter supporting shaft and a rotary rest support arranged at right angles to each other, and means for rotating said shaft and support, a rotary cutter comprising a plurality of radial knives mounted on said cutter shaft, the cutting edges of said knives lying in a c'one having an angle of 45 degrees andhaving its axis coincident with that of the cutter shaft a rest'for sustaining and guiding the sole margin mounted on the rest support and havlng its supporting surface formed as a cone having an angle of 6L5 de grees, and its axis coincident w ith the axis of rotation ofthe rest.

7. A sole rounding machine comprising a cutter supporting shaft and a rotary rest support arranged at right angles to each other, andmeans for rotating said shaft and support, a rotary cutter comprlsing a p1urality of radial knives mounted on said outlying in a cohe having an angle of 45 degrees at right angles to the path 8. A sole rounding machine com rising a rotary cutter havin a plurality 0 radial knives, the cutting ec ges of which lie in a? cone having its axis comcident with the axis of rotation of the cutter, and means for supporting the sole margin in the path of sald knives with its supporting surface at right angles thereto and on the same side of said supporting means as the apex of the conical pat thereof. a Y

9. A sole roundingmachine comprisng a rotary cutter having a plurality of radial knives, the cutting edges of which lie in a cone having its axis coincident with the axis of rotation of the cutter, and a rotary rest for su porting the sole margin in the path of sai knives with its supporting surface at right angles thereto and on the same'sicle of said supportingrestas the apex of the'conical path thereof.

10. A sole rounding machine comprising a rotary cutter having a plurality of radial knives, the cutting edges of which lie in a cone having its axis coincident with the axis of rotation of the cutter, and a rotary rest for supporting the sole margin in the path of sailrhknives and at right angles thereto, said rest havin near its periphery an, annular recess witi the outer wall pei'pendicular to the supporting surface of the rest and cooperating with, the knives to round the sole. a

11. A sole rounding machine comprising a cutter shaft and means for rotating it, a plurality of radial knives projecting from said shaft, each knife-having its cutting portion lying in a cone having the same axis as the axis ofrotation of the shaft whereby the knives are adapted to cut the sole around the reentrant curves of the shank, and a rest for supporting andguiding the sole margin with'itssupporting surface at right angles to the path of the knives and on the same side of said rest as the ape); of the conical path of said knives.

12. A sole roundingmachine comprising a cutter shaft and means for rotating it, a plu rality of radial knives projecting from said shaft, each knife having its cutting portion lying in a cone having the same axis as the axis of rotation of the shaft whereby the knives are adapted to cut the sole around the reiintrant curves of the shank, a rest for supporting and giiiding the sole margin with In testimony Wherebfl have signed my its supporting surface at right angles to the path of the knives and on the same side of said rest as the apex of the conicalv path of said knives, and means for rotating said rest in a direction opposite to that of the retation of the knives.

tWo subscribing Witnesses. GEORGE W. CARTER.

Witnesses:

FRANK KIMBALL, ROLAND G. KIMBALL.

name to this specification, 1n the presence of 

